Ex-BlackBerry co-CEO Jim Balsillie dumps entire stake — A year ago, Balsillie owned 26.8 million shares of BlackBerry stock. Now he's down to zero. — Jim Balsillie, the former co-CEO of BlackBerry, sold off his entire stake in the company, according to a regulatory filing.

HP To Adopt Android For Upcoming Mobile Devices — Having failed to carve out a place for itself in the post-PC era, Hewlett-Packard is now taking drastic measures — by adopting Google's Android operating system to run a series of upcoming mobile devices. — It's a bit of a Hail Mary pass for HP …

A Chinese Hacker's Identity Unmasked — Joe Stewart's day starts at 6:30 a.m. in Myrtle Beach, S.C., with a peanut butter sandwich, a sugar-free Red Bull, and 50,000 or so pieces of malware waiting in his e-mail in-box. Stewart, 42, is the director of malware research at Dell SecureWorks …

Welcome to the Malware-Industrial Complex — The U.S. government is developing new computer weapons and driving a black market in “zero-day” bugs. The result could be a more dangerous Web for everyone. — Why It Matters — Governments, contractors, and researchers are developing cyber-weapons …

No “Plan B” for Microsoft's mobile ambitions: CFO — (Reuters) - Microsoft Corp has not made much of a dent in Apple Inc's and Google Inc's domination of mobile computing, but a top executive hinted on Wednesday that it will not stop trying and does not have an alternative strategy.

A New Push for Entrepreneur Visas — Rutul Davé, a native of India, had an H1-B visa, which tied him to a specific firm. He couldn't start his own U.S. company until he got a green card. — Fabien Beckers of San Francisco is one of dozens of entrepreneurs traveling to Washington …

Apple says a fix is coming for iOS 6.1 Exchange bug — After an issue with Exchange syncing led Microsoft to suggest IT administrators block iOS 6.1 devices, Apple says it has identified the problem. The company updated its support page to say that the fix will come in an upcoming software update …

Barnes & Noble sees Nook unit loss increasing in 2013 — (Reuters) - Barnes & Noble Inc said on Wednesday it expects its Nook business to post an increased full-year loss in fiscal 2013, as the top U.S. bookstore chain struggles with slower sales of e-readers and e-books and rising costs.

Introducing the Kickstarter App for iPhone and iPod Touch — We're excited to announce that the first official Kickstarter app launched in the iTunes Store this morning! It's available for iPhone and iPod Touch, it's free, and you can download it here. — The app is a whole new way to experience Kickstarter.

Spanish scientists develop more accurate sat-nav system — Toyota is one of several car manufacturers working on automated vehicles — Researchers in Spain have developed a system they say can greatly improve the accuracy of car sat-navs. — It combines a conventional global positioning system …

China's Internet ‘Wall’ Hits Business — BEIJING—Fredrik Bergman ran into a problem when a client in Sweden tried to transfer files to his firm's headquarters here: Each time, the firm lost its Web connection for an hour or so. — After several weeks of multiple outages a day, he says …